The mail clients that Computing Resources actively supports are
The Web-browser based Correo
Firefox 3.5 (with Thunderbird 3.0 for email)
Mac "mail" program
( The I.T. department can not currently provide support for Microsoft Outlook. Please contact the TLC for help with Outlook.)
You are welcome to try and use other clients (Opera, Calypso, Netscape 7.x, Eudora, etc), but how (and whether) they work is beyond the scope of our ability to provide support.